Allow setting breakpoints in literal function initializers of fields.

runtime/vm/debugger.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef RUNTIME_VM_DEBUGGER_H_
 #define RUNTIME_VM_DEBUGGER_H_
 
 #include "include/dart_tools_api.h"
 
 #include "vm/object.h"
@@ skipping 613 matching lines @@
   bool NeedsDebugEvents();
   void InvokeEventHandler(ServiceEvent* event);
 
   void SendBreakpointEvent(ServiceEvent::EventKind kind, Breakpoint* bpt);
 
   bool IsAtAsyncJump(ActivationFrame* top_frame);
   void FindCompiledFunctions(const Script& script,
                              TokenPosition start_pos,
                              TokenPosition end_pos,
                              GrowableObjectArray* function_list);
-  RawFunction* FindBestFit(const Script& script, TokenPosition token_pos);
+  bool FindBestFit(const Script& script,
+                   TokenPosition token_pos,
+                   TokenPosition last_token_pos,
+                   Function* best_fit);
   RawFunction* FindInnermostClosure(const Function& function,
                                     TokenPosition token_pos);
   TokenPosition ResolveBreakpointPos(const Function& func,
                                      TokenPosition requested_token_pos,
                                      TokenPosition last_token_pos,
                                      intptr_t requested_column);
   void DeoptimizeWorld();
   BreakpointLocation* SetBreakpoint(const Script& script,
                                     TokenPosition token_pos,
                                     TokenPosition last_token_pos,
@@ skipping 144 matching lines @@
 
   friend class Isolate;
   friend class BreakpointLocation;
   DISALLOW_COPY_AND_ASSIGN(Debugger);
 };
 
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_DEBUGGER_H_